diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc')
-rw-r--r-- | sysdeps/unix/sysv/linux/sparc/sparc32/clone.S | 22 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/sparc/sparc64/clone.S | 53 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/sparc/sparc64/pause.c | 48 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h | 45 |
4 files changed, 148 insertions, 20 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/clone.S b/sysdeps/unix/sysv/linux/sparc/sparc32/clone.S index 66cdbf3ca7..4d8fdb8200 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/clone.S +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/clone.S @@ -40,11 +40,19 @@ __clone: save %sp,-96,%sp /* sanity check arguments */ - tst %i0 + orcc %i0,%g0,%g2 be .Lerror orcc %i1,%g0,%o1 be .Lerror mov %i2,%o0 + + /* The child_stack is the top of the stack, allocate one + whole stack frame from that as this is what the kernel + expects. */ + sub %o1, 96, %o1 + mov %i3, %g3 + mov %i2, %g4 + /* ptid */ mov %i4,%o2 /* tls */ @@ -76,19 +84,21 @@ __clone: __thread_start: #ifdef RESET_PID sethi %hi(CLONE_THREAD), %l0 - andcc %i2, %l0, %g0 + andcc %g4, %l0, %g0 bne 1f - andcc %i2, CLONE_VM, %g0 + andcc %g4, CLONE_VM, %g0 bne,a 2f mov -1,%o0 set __NR_getpid,%g1 ta 0x10 -2: st %o0,[%g7 + PID] +2: + st %o0,[%g7 + PID] st %o0,[%g7 + TID] 1: #endif - call %i0 - mov %i3,%o0 + mov %g0, %fp /* terminate backtrace */ + call %g2 + mov %g3,%o0 call _exit,0 nop diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S b/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S index a7c248b2e8..f6134599e2 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S @@ -22,8 +22,16 @@ #include <asm/errno.h> #include <asm/unistd.h> +#include <tcb-offsets.h> -/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */ +#define CLONE_VM 0x00000100 +#define CLONE_THREAD 0x00010000 + +/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg, + pid_t *ptid, void *tls, pid_t *ctid); */ + + .register %g2,#scratch + .register %g3,#scratch .text .align 4 @@ -34,22 +42,31 @@ __clone: save %sp, -192, %sp /* sanity check arguments */ - brz,pn %i0, 99f - mov %i0, %l0 /* save fn */ - brz,pn %i1, 99f - mov %i3, %l3 /* save arg */ + brz,pn %i0, 99f /* fn non-NULL? */ + mov %i0, %g2 + brz,pn %i1, 99f /* child_stack non-NULL? */ + mov %i2, %o0 /* clone flags */ + + /* The child_stack is the top of the stack, allocate one + whole stack frame from that as this is what the kernel + expects. Also, subtract STACK_BIAS. */ + sub %i1, 192 + 0x7ff, %o1 + mov %i3, %g3 + mov %i2, %g4 + + mov %i4,%o2 /* PTID */ + mov %i5,%o3 /* TLS */ + ldx [%fp+0x7ff+176],%o4 /* CTID */ /* Do the system call */ - sub %i1, 0x7ff, %o1 - mov %i2, %o0 set __NR_clone, %g1 ta 0x6d bcs,pn %xcc, 99f nop brnz,pn %o1, __thread_start - mov %o0, %i0 + nop ret - restore + restore %o0, %g0, %o0 99: #ifndef _LIBC_REENTRANT #ifdef PIC @@ -77,10 +94,22 @@ __clone: .type __thread_start,@function __thread_start: +#ifdef RESET_PID + sethi %hi(CLONE_THREAD), %l0 + andcc %g4, %l0, %g0 + bne,pt %icc, 1f + andcc %g4, CLONE_VM, %g0 + bne,a,pn %icc, 2f + mov -1,%o0 + set __NR_getpid,%g1 + ta 0x6d +2: st %o0,[%g7 + PID] + st %o0,[%g7 + TID] +1: +#endif mov %g0, %fp /* terminate backtrace */ - sub %sp, 6*8, %sp /* provide arg storage */ - call %l0 - mov %l3,%o0 + call %g2 + mov %g3,%o0 call _exit,0 nop .size __thread_start, .-__thread_start diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/pause.c b/sysdeps/unix/sysv/linux/sparc/sparc64/pause.c index 2ec5bd39ad..40fab28d47 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/pause.c +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/pause.c @@ -1 +1,47 @@ -#include <sysdeps/posix/pause.c> +/* pause -- suspend the process until a signal arrives. POSIX.1 version. + Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <signal.h> +#include <unistd.h> +#include <sysdep-cancel.h> + +#include <sysdep.h> +#include <sys/syscall.h> +#include <bp-checks.h> + +/* Suspend the process until a signal arrives. + This always returns -1 and sets errno to EINTR. */ +int +__libc_pause (void) +{ + sigset_t set; + + __sigemptyset (&set); + INLINE_SYSCALL (rt_sigprocmask, 4, SIG_BLOCK, CHECK_SIGSET (NULL), + CHECK_SIGSET_NULL_OK (&set), _NSIG / 8); + + /* pause is a cancellation point, but so is sigsuspend. + So no need for anything special here. */ + + return __sigsuspend (&set); +} +weak_alias (__libc_pause, pause) + +LIBC_CANCEL_HANDLED (); /* sigsuspend handles our cancellation. */ diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h b/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h index 3c6492aeca..071aa3a310 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h @@ -85,11 +85,54 @@ SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \ sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7; \ call __sparc64.get_pic.l7; \ add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7; \ - ldx [%l7 + rtld_errno], %l0; \ + sethi %hi(rtld_errno), %g1; \ + or %g1, %lo(rtld_errno), %g1; \ + ldx [%l7 + %g1], %l0; \ st %i0, [%l0]; \ jmpl %i7+8, %g0; \ restore %g0, -1, %o0; \ .previous; +#elif USE___THREAD +# ifndef NOT_IN_libc +# define SYSCALL_ERROR_ERRNO __libc_errno +# else +# define SYSCALL_ERROR_ERRNO errno +# endif +# ifdef SHARED +# define SYSCALL_ERROR_HANDLER \ + .section .gnu.linkonce.t.__sparc64.get_pic.l7,"ax",@progbits; \ + .globl __sparc64.get_pic.l7; \ + .hidden __sparc64.get_pic.l7; \ + .type __sparc64.get_pic.l7,@function; \ +__sparc64.get_pic.l7: \ + retl; \ + add %o7, %l7, %l7; \ + .previous; \ +SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \ + save %sp,-192,%sp; \ + sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %l1; \ + sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7; \ + call __sparc64.get_pic.l7; \ + add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7; \ + add %l1, %tie_lo10(SYSCALL_ERROR_ERRNO), %l1; \ + ldx [%l7 + %l1], %l1, %tie_ldx(SYSCALL_ERROR_ERRNO); \ + st %i0, [%g7 + %l1], %tie_add(SYSCALL_ERROR_ERRNO); \ + jmpl %i7+8, %g0; \ + restore %g0, -1, %o0; \ + .previous; +# else +# define SYSCALL_ERROR_HANDLER \ +SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \ + sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %g1; \ + sethi %hi(_GLOBAL_OFFSET_TABLE_), %g2; \ + add %g1, %tie_lo10(SYSCALL_ERROR_ERRNO), %g1; \ + add %g2, %lo(_GLOBAL_OFFSET_TABLE_), %g2; \ + ldx [%g2 + %g1], %g1, %tie_ldx(SYSCALL_ERROR_ERRNO); \ + st %o0, [%g7 + %g1], %tie_add(SYSCALL_ERROR_ERRNO); \ + jmpl %o7+8, %g0; \ + mov -1, %o0; \ + .previous; +# endif #else # define SYSCALL_ERROR_HANDLER \ SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \ |